Oil-extracting apparatus



F. STFHCKLAND.

OIL EXTRACTING APPARATUS.

APPLICATION FILED JAN- 26. m's.

Reissued May 31, 1921.

WWII H mem r formed with the cylinder a .by a tapered or conical 85UNITED STATES PATENT OFFICE. rmsrnicnmn, or masses, scum cano ml '0. 1m,

citizen of the United tates, and resident of Anderson, county ofAnderson, State of South Carolina, have invented certain new and usefulImprovements in Oil-Extracting Apparatus, of which the following is .aspecification.

The apparatus constructed in accordance with my invention is adapted forthe continuous compression of submances such as cottonseed, hnseed,gas-nuts, and beans, for extracting oil them 111 in an efiective andeconomical manner.

The details of construction, at, v

and o ration of the parts are as hereinafter with ref to theaccompanyings, in which:

Fig. 2 is a longitudinal sectional. ovation through the same; 1

Fig. 3 is an elevation of one ofthe plates, a pluralit of which areassembled in a series to form t e body or shell of the apparatus; Fig. 4is a sectional view of a p ate taken substantially on the line 4-4 of 3;and J 5 is an-inner end view of'the tail piston therein.

Refe to'Fig. 2 I provide a rotary comp and conveyer which is circular incross section and comprises a portion 1 connected to a reduced orsmaller portion 1"- rtion 1', the large rtion 1 and coni 'portion- "1?being ormed with a spiral groove 2 which serves to feed forward andcompress the oilbearin material as the compressor is rotated.

plurality of plates 3 of substantially rectangular outline are assembledin a series to form the body or shell of the apparatus.

. Each of these plates at its corners is formed with an ear 3 theouteredge of which is curved as at 3' to bear against the tie rods 8.The plates are formed with a centralbore 4- and centrally H ron sidesthereof which constitute a ub 5. Each hub is formed with perforations orducts 7 for the of the expressed thereof on oil, As clearly shown-in 2,these plates are-ammbled in a series with the ears 3' the tie rods 8 andwith the central boxes 4 in alinement wherebyga. lonis formed throughthe ap- 1916. Application m paratus. The compressor is mounted withinthis I 1 ms passageior cliin'nber, fihe bores of the p a surroun lngt ein groo ved 1'- tion belng of such dian i dter a s to fit clo lythereagarnst, while the bores of the plates surrounding the reduced orsmooth portion of the compressor are of larger diameter than the sa dportion, thus forming an annular space around the same for thep w: ofthe material. It will be observed that I e hubs of the plates beingthicker than the outer portions thereof, serve to space the aspecucation' c! Behlued Letters ne Reissue! ay 31, 1921' dated lab 17,.1917, Serial No. 190,861, filed September 18, reissue died January 20,1918. Serial Io. 814,028,

said outer portions thereby forming annular radial The stout tie rods -8,=each of which at one of its ends is mounted "in a boss or car 9 formedupon a head member 10, and at its other end in similar boss or ear.11formed upon a tail member 12. 'The ends of the tie rods are threaded a'tthehead end ofthe a paratus for thenuts 13 and at the tail en for thespaces 6 't-herebetween.

nuts 14 whereby separation of the head and tail members is prevented.Interposed'between the tail member and the series of plates is a plate16.having the ears 18 engagmg the tie rods, and inte between the headmember and the series of plates is a thick plate 15 having the ears 17at its oor-. ners engaging the said tie'rods.

The plate '15 is formed with a conical bore 19 which receives a conicalplate 21 between which and the head member is an antifriction thrustbearin 21'; The plate 16 is formed vlvlith ahconicalglre whichaimstltutes t e ou et or openlng' or the residue and is adapted t becontrolled by a valve member 24 having the ears 25 engaging. the tierods. This valve member is formed with a conical portion which valvemember 24 has its side adjacent the piston formed with a circular recess29 in which the end of the piston is mounted. If

desired, the cylinder may be provided with a packin ring '28 to preventleakage by the piston. The cylinder has connection with a p ates areheld in position by the four by-products I fluid pressure supply pipe30and the outlet through the outlet 20 and may fall into a char the same.as. 4

The compressor is formed with a reduced end' or spindle 33 whichextends-through and has a bearing in the head member 10. This spindlehas secured thereto a gear 33 driven by "a pinion 34 on a shaft 36 whichin turn is rotated by means of a belt driven pulley 35. p The main partof the apparatus is supported upon a suitable frame-work 37 and abearing for the shaft 36 issupported. by a member 38. a

In the operation of the device the oil bearing material is brought tothe chute 22 by conveyer 32 which is arranged to carry away means of theconveyer 23. The rotation of the compressor feedsthe material th'ouglh te the passage formed by the bores 0 plates at the same time compressingthe same and expressing the oil which is disd through the perforationsor ducts 7. he amount of compression and the rate of o eration of themachine is controlled by t e resistance which is offered to the openingof the valve member 24. This reslstance 'is produced by the fluidpressure within the cylinder which acts against the piston 27 therebyforcin the valve member toward its seat. It will trolling the pressurewithin the said cylinder the action of the valve may be governed veryeasily and efliciently.

The plates 3 withtheir perforated heads provide an exceedingly strongbody or shell construction. The pressure produced by the compressor ofcourse tends to burst theshell or body" and it will be seen that thevebs of 'theplates thus constitute reinforci-agmem here which, are verystrong in a circumferential direction.

one which ut1 so The thrust f the compressor is transmit ted to the headmember 10 and the thrust gainst the discharge valve iscarried by.

e- -tail member 11, and'the separationof ese, two members is resisted bythe tie rods Hence, as the longitudinalthrust of the pparatus is takenby the tie rods and'the ursting or the hoop stresses produced by the"ompressor'are taken by the plates, an exceedingly ru a aratus isprovidedand fizils d ly the strength of these parts. In machines .wherethe shell or body takes both longitudinal and circumferential :sttesses-ortensions, it is obvious that the material of the shell is subjectedto very severe stresses. In practice the stresses in this latter type ofapparatus are so great orresidue are discharged movement.

seen that by con is claime that it is very diflicult to provide a shellstrong enough to resist rupture. a

The fluid pressure means carried by the tail member constitutes a veryefiicient construction forregulating the discharge valve. Asdistinguished. from spring controlled valves the pressure exertedagainst the valve member 24 is uniform no matter how far the valve ismoved from its seat. Consequently,- the compressive action of theapgaratusls uniform and does not vary with t of openin of the dischargevalve. It will be noted 51% the discharge valve isv guided forlongitudinal movement at four points, that is, on the four tie rods.Furthermore, 80 the end of the large iston isseated in a V recess in thevalve and ears directly against the same. These two features inconjunction practically eliminate any tendency of the discharge valve tobind in its sliding Obviously, this is of considerable importance as, ifthe valve binds, the compressive action of the apparatus will not beuniform. Moreover, the force acting to close the discharge valve may becontrolled very easily and quickly, as by merely turning a valve. 7 y

The apparatus above described is particularly adaptedfor manufacture inaccord-' ance with the modern principles of stand- 95 ardization. Itwill be seen that the capacity of a press constructed in accordance withmy invention may be varied merelyl by changing the compressor andthe-lengt of the tie rods.- Thus'the lates, the head and tailmembers,and severa other parts may be used for several different sizes ofmachines. It is not thou ht necessary to detail the advantages of t isfeature as the advantages of standardization are well known.

Although a specific embodiment of the invention has been described, itis apparent that man of the details thereof may be varied WItllOlltdeparting from the spirit of the invention.

. Havi thus described the inventionwhat asnew and desired to be securedby LettersP'atent is 11A press for the pH se specified com prising aspirally groove com ressor which is circular in cross section, an a bodysure amount rounding said compressor which is formed duced portion ofthe compressor being sepa-.

arranged parallel, central 7 or hub portions being provided with ductsleading outward and their-outer portions being thinner than the hubportions and thus se arated b narrow spaces, the smooth sur a'ces of t ererated from the surrounding bod by a narrow annularspace, and means orrotating the conveyert, as described.

3. The com ination with a spirall grooved compressor, and a surroundinbo y formed of a series of plates, latera passages for escape of liquid,the end plate 16-havin ,a

' conical bore, a conical closure 24 adapte to fit in said bore, and ahydraulically operated piston whose inner end is seated in said conicalclosure, as described.

4. An oil extracting apparatus including in combination, a shell, arotary compressor and-conveyer member disposed in said shell having acircular endv portion, a slidable valve member controlling the dischargeof residue from one end of the shell having a bearing for said circularend portion of the compressor member, and yielding means opposingopening movement of said valve member.

5. An oil extracting apparatus including incombination a shellhavinglater'al outlets for oil means for continuously compressingandforcing'oil bearing material through said shell from one end to theother, a head member at the inlet end of said shell and a tail member atthe outlet end, said tail memher having a c linder in line with saidshell, a plurality 0 parallel tie rods connecting said head member andtail member, a lon itudinally movable valve member for the discharge endof said shell and arranged between the said, shell and tail member andhaving portions slidabl engaging saidtie rods t'opermitlongitu inalmovement but prevent turning, a piston in .said cylinder end and havinglateral supporting portions ,slidably engaging said rods, a hydrauliccylinder with an open end in line with said discharge end secured to theends of said rods, a piston in said cylinder and means for directlytransmitting pressure from said piston to said closure at points equallydistributed around its center to move it to closed position.

7. In a press of the character described, the combination of acompressor formed of two lengthwise cylindrical portions differing indiameter, and an intermediate tapering portion by which they areconnected,the. larger and tapered portions having a spiral feed groove,a body surrounding said compressor, and fitting it throughoutits largerdiameter and tapering portion but having, a narrow annular space aroundthe smooth eyond the end of said smaller portion,- means for laterallydischarging the expressed oil from said body, means connected to saidcompressor at the end of greatest diameter for supporting and drivingit, a closure for the discharge end-of said body and the small end ofsaid compressor, and meansfor applying constant ressure to said closuretendin to closethe ischar 8. Ina device of the class described, thecombination with a compressor having thereon a spiral conveyer, a bodyprovided with pressor, means for slidabl su porting said closure at aplurality 0 points removed from its center, and means for applying aconstant pressure on said closure to close, said discharge end.

ortion of smaller diameter and extending In testimony whereof I affix msi nature.

FRED s'rmc D.

